GB928717A - Polyamide acid polymers and their production - Google Patents

Polyamide acid polymers and their production

Info

Publication number
GB928717A
GB928717A GB7136/62A GB713662A GB928717A GB 928717 A GB928717 A GB 928717A GB 7136/62 A GB7136/62 A GB 7136/62A GB 713662 A GB713662 A GB 713662A GB 928717 A GB928717 A GB 928717A
Authority
GB
United Kingdom
Prior art keywords
polyamide
production
acid polymers
polyamide acid
dianhydride
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7136/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB928717A publication Critical patent/GB928717A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C08G73/1003—Preparatory processes
    • C08G73/1007—Preparatory processes from tetracarboxylic acids or derivatives and diamines

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

In an improvement in or modification of the process claimed in the parent Specification, the reaction between the tetracarboxylic acid dianhydride and the diamine is carried out at a temperature above 60 DEG C. for a period of time sufficient to provide a polymer composed of at least 50% of the polyamide-acid. Examples (1) and (2) describe the preparation of solutions of polyamide-acids in:- (1) N:N-dimethylacetamide and (2) N-methylcaprolactam by reacting pyromellitic dianhydride and 4:41-diaminodiphenyl ether in the presence of the specified solvents. The products of the process may be converted by heat treatment or may be applied to substrates as coatings optionally pigmented with titanium dioxide. Specification 903,271 also is referred to.
GB7136/62A 1961-03-13 1962-02-23 Polyamide acid polymers and their production Expired GB928717A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US95014A US3179614A (en) 1961-03-13 1961-03-13 Polyamide-acids, compositions thereof, and process for their preparation

Publications (1)

Publication Number Publication Date
GB928717A true GB928717A (en) 1963-06-12

Family

ID=22248611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7136/62A Expired GB928717A (en) 1961-03-13 1962-02-23 Polyamide acid polymers and their production

Country Status (3)

Country Link
US (1) US3179614A (en)
DE (1) DE1520486C3 (en)
GB (1) GB928717A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482607A1 (en) * 1980-05-19 1981-11-20 Gen Electric PARTIALLY IMIDIZED POLYAMIDE-ACID POLYMER, COATING COMPOSITION THEREOF AND COATED THREAD USING THE SAME

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FR2482607A1 (en) * 1980-05-19 1981-11-20 Gen Electric PARTIALLY IMIDIZED POLYAMIDE-ACID POLYMER, COATING COMPOSITION THEREOF AND COATED THREAD USING THE SAME

Also Published As

Publication number Publication date
DE1520486A1 (en) 1969-12-18
DE1520486B2 (en) 1972-07-13
DE1520486C3 (en) 1974-07-11
US3179614A (en) 1965-04-20

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